> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v23** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/ManagerLinkErrorEnum.ManagerLinkError).

Enum describing possible ManagerLink errors.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/errors/manager_link_error.proto)

| Enums ||
|---|---|
| ## `ACCOUNTS_NOT_COMPATIBLE_FOR_LINKING` | The manager and client have incompatible account types. |
| ## `ALREADY_INVITED_BY_THIS_MANAGER` | Client is already invited by this manager. |
| ## `ALREADY_MANAGED_BY_THIS_MANAGER` | The client is already managed by this manager. |
| ## `ALREADY_MANAGED_IN_HIERARCHY` | Client is already managed in hierarchy. |
| ## `CLIENT_HAS_NO_ADMIN_USER` | Client has no active user that can access the client account. |
| ## `CLIENT_OUTSIDE_TREE` | You are not allowed to move a client to a manager that is not under your current hierarchy. |
| ## `CREATING_ENABLED_LINK_NOT_ALLOWED` | The link was created with status ACTIVE and not PENDING. |
| ## `CUSTOMER_CANNOT_MANAGE_SELF` | You are not allowed to link a manager account to itself. |
| ## `CYCLE_NOT_ALLOWED` | Adding this link will create a cycle. |
| ## `DUPLICATE_CHILD_FOUND` | Manager and sub-manager to be linked have duplicate client. |
| ## `INVALID_CHANGE` | The change for mutate link is invalid. |
| ## `INVALID_STATUS_CHANGE` | The changed status for mutate link is invalid. |
| ## `MAX_DEPTH_EXCEEDED` | Adding this link would exceed the maximum hierarchy depth. |
| ## `NON_OWNER_USER_CANNOT_MODIFY_LINK` | The account is not authorized owner. |
| ## `SUSPENDED_ACCOUNT_CANNOT_ADD_CLIENTS` | Your manager account is suspended, and you are no longer allowed to link to clients. |
| ## `TOO_MANY_ACCOUNTS` | Manager account has the maximum number of linked clients. |
| ## `TOO_MANY_ACCOUNTS_AT_MANAGER` | Parent manager account has the maximum number of linked clients. |
| ## `TOO_MANY_INVITES` | Manager has too many pending invitations. |
| ## `TOO_MANY_MANAGERS` | Client is already linked to too many managers. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |